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SGTX promotes the use of Fungi-to-Bacteria ratios as a key to understanding how a below-ground soil foodweb succession parallels an above-ground plant ecological succession. The following chart illustrates this concept. Early-successional plants (invasive weeds and annual crops) are bacterial-dominated while late-successional plants (prairies, trees, and forests) are fungal-dominated. The numbers in the chart are based on soil biology lab tests. They are reported as Total Fungal Biomass : Total Bacteria Biomass (F:B) in micrograms per gram.

The soil biology test provides a practical glimpse of which kinds and how many soil critters make up the existing soil foodweb on a farm, ranch, yard, park, etc. This chart guides SGTX work...